import Vue from 'vue'
import VueRouter from 'vue-router'

const Login = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/login.vue')
const Home = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Home.vue')
Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  {
    path: '/home',
    component: Home,
    redirect: '/welcome',
    children: [
      {path: '/welcome', component: Welcome},
      {path: '/users', component: Users},
      {path: '/rights', component: Rights},
      {path: '/roles', component: Roles},
      {path: '/params', component: Params},
      {path: '/goods', component: GoodsList},
      {path: '/goods/add', component: GoodsAdd},
      {path: '/orders', component: Orders},
      {path: '/reports', component: Reports},
    ]
  },
]

const router = new VueRouter({
  routes
})

router.beforeEach((to, from, next) => {
  // to将要访问的路径
  // from代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  // next() 放行， next('/login')强制跳转
  if (to.path === '/login') return next();
  const tokenStr = window.sessionStorage.getItem('token');
  if (!tokenStr) return next('/login');
  next();
});

export default router
